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- are supplied automatically; if all atoms are
- in special positions, some of those marked "Special:" may also apply. The
- conditions consist of a class of indices, such as "hkl", or "hhl", etc., and
- an equation such as "h+k+l=2n" (which is the condition for a body-centered or
- "I" lattice). The general form of these equations can be written as xh+yk+zl
- = wn (all coefficients are integers; wn means a number divisible by w, etc.).
- When adding absence conditions, you are required to choose the class of
- reflection, and to specify the coefficients x, y, z, and w, all of which are
- integers.
-
- You do not need to enter conditions which are given in the Tables in
- parentheses (these are implied by other conditions), nor do you need to
- permute the indices, as sometimes indicated in higher-symmetry groups by a
- partial circle with an arrow on it. For each set of symmetry-equivalent
- indices, it is only necessary to enter one class. For example, in trigonal
- crystals, the class "HHl" (hh2hl) will also apply to classes "2HHL" (2hhhl)
- and "H2HL" (h2hhl), and in hexagonal crystals the same class will also give
- three additional equivalent classes.
-
- change modes.
-
- vector will be
- the vector [001].
-
- stuvwxyz{|}~ÇüéâäàåçêëèïîìÄÅÉæÆô òü Ü¢£¥₧ƒ íóúñѪº¿ » │┤╡╢╖╕╣║╗ ╛┐└┴┬├─┼╞ ╚ ╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦ Ωδ∞φεZ ≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ ** Help file XTLAXE.HLP - Structure axes
-
- The structure axes are scaled initially to extend half their proper lengths in
- the positive and negative directions. Thus the scale factor, which may be
- changed, is initially 0.5. The axes are shown in front of the atoms and faces,
- at the zero point of the structure; their orientation, but not position, is
- affected by rotations.